The Negh'Var-class warship is the latest and most advanced starship in the Klingon Defense Force. The
Federation first encountered this class in 2372 during the Klingon Empire's invasion of Cardassia.

The IKS Negh'Var, prototype for the class, and current flagship of the Klingon Empire, led an assault
on DS-9 commanded by Chancellor Gowron and General Martok. The Negh'Var is also the largest Klingon
ship on record, more heavily armed than any other in their fleet. Intelligence reports show 20
disruptor cannons and four torpedo launchers. Along powerful shields and cloaking device. The design
shares similarities with its predecessor, the Vor'cha-class.

What little intelligence reports Starfleet has shows that they have a length of 682 meters, a mass of
4,310,000 metric tons, and a top speed of warp 9.6.

The Negh'Var was a modification of the future Klingon ship model used in "All Good Things..." - TNG.